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Anthropic | Anthropic | Alibaba | OpenAI | |
|---|---|---|---|---|
| Vendor | Anthropic | Anthropic | Alibaba | OpenAI |
| Family | Claude | Claude | Qwen | o-series |
| Release date | 2026-05-28 | 2026-04-16 | 2026-05-20 | 2025-04-16 |
| Context window | 1,000,000 tokens | 1,000,000 tokens | 1,000,000 tokens | 200,000 tokens |
| Parameters | — | — | — | — |
| Modality | text, vision | text, vision | text | text, vision |
| License | proprietary | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary | proprietary |
| Description | Anthropic's flagship hybrid-reasoning model — Opus 4.8 pushes coding and AI-agent workflows further (agentic coding 69.2% vs 64.3% on 4.7; multidisciplinary reasoning 57.9% vs 54.7%). 1M-token context, $5/$25 per MTok pricing held flat from Opus 4.7. Introduces Dynamic Workflows for Claude Code (research preview). GA on Anthropic API (`claude-opus-4-8`), AWS Bedrock, Google Vertex, Microsoft Foundry, and GitHub Copilot. | Anthropic's previous Opus flagship — superseded by Opus 4.8 on May 28, 2026 (42-day cycle). Optimized for complex reasoning and coding. Improved software engineering, long-running coding tasks, and higher-resolution vision over Claude 4.6. | Alibaba's flagship agent model — 1M-token context, extended-thinking mode, 56.6 on the Artificial Analysis Intelligence Index v4.0 (5th overall, #1 Chinese). 50.8% on Terminal-Bench Hard. Designed for long-horizon agent workloads (hundreds-to-thousands of steps). Closed-weight, $2.50/$7.50 per 1M tokens. | Reasoning-focused model in the o-series. |
| Links | ||||
| Benchmarks | ||||
| MMLU-Pro | — | 88.2% | 83.7% | — |
| GPQA-D | — | 90.1% | 83.0% | 87.7% |
| HumanEval | — | 97.4% | 93.9% | — |
| Aider | — | 91.2% | 78.4% | — |
| AIME-25 | — | 93.5% | 90.4% | 88.9% |
| LiveCB | — | 80.2% | 71.0% | — |
| MMMU | — | 79.0% | — | — |
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